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{"work":{"id":31473797,"created_at":"2017-02-16T14:42:13.351-08:00","from_world_paper_id":160919614,"updated_at":"2024-11-18T00:22:10.151-08:00","_data":{"grobid_abstract":"Inorganic colloidal particles which are in situ hydrophobized upon adsorption of short-chain amphiphilic molecules can be used as foam stabilizers. In this study, we tailor the microstructure of particle-stabilized wet foams, namely, the foam air content, average bubble size, and bubble size distribution, by changing the composition of the initial colloidal suspension. Wet foams featuring average bubble sizes between 10 and 200 µm and air contents between 45% and 90% were obtained by adjusting the amphiphile and particle concentration, pH, ionic strength, and particle size in the initial suspension. The influence of these parameters on the bubble size was satisfactorily described in terms of a balance between the shear stress applied during mixing and the counteracting Laplace pressure of the air bubbles. This model, originally developed for oil droplets in emulsions, can therefore be used to deliberately tailor the microstructure of particle-stabilized wet foams.","publication_date":"2007,,","publication_name":"Langmuir","grobid_abstract_attachment_id":"51827668"},"document_type":"paper","pre_hit_view_count_baseline":null,"quality":"high","language":"en","title":"Tailoring the Microstructure of Particle-Stabilized Wet Foams","broadcastable":true,"draft":null,"has_indexable_attachment":true,"indexable":true}}["work"]; window.loswp.workCoauthors = [58696437]; window.loswp.locale = "en"; window.loswp.countryCode = "SG"; window.loswp.cwvAbTestBucket = ""; window.loswp.designVariant = "ds_vanilla"; window.loswp.fullPageMobileSutdModalVariant = "full_page_mobile_sutd_modal"; window.loswp.useOptimizedScribd4genScript = false; window.loginModal = {}; window.loginModal.appleClientId = 'edu.academia.applesignon'; window.userInChina = "false";</script><script defer="" src="https://accounts.google.com/gsi/client"></script><div class="ds-loswp-container"><div class="ds-work-card--grid-container"><div class="ds-work-card--container js-loswp-work-card"><div class="ds-work-card--cover"><div class="ds-work-cover--wrapper"><div class="ds-work-cover--container"><button class="ds-work-cover--clickable js-swp-download-button" data-signup-modal="{"location":"swp-splash-paper-cover","attachmentId":51827668,"attachmentType":"pdf"}"><img alt="First page of “Tailoring the Microstructure of Particle-Stabilized Wet Foams”" class="ds-work-cover--cover-thumbnail" src="https://0.academia-photos.com/attachment_thumbnails/51827668/mini_magick20190124-30055-bl70er.png?1548344892" /><img alt="PDF Icon" class="ds-work-cover--file-icon" src="//a.academia-assets.com/images/single_work_splash/adobe_icon.svg" /><div class="ds-work-cover--hover-container"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span><p>Download Free PDF</p></div><div class="ds-work-cover--ribbon-container">Download Free PDF</div><div class="ds-work-cover--ribbon-triangle"></div></button></div></div></div><div class="ds-work-card--work-information"><h1 class="ds-work-card--work-title">Tailoring the Microstructure of Particle-Stabilized Wet Foams</h1><div class="ds-work-card--work-authors ds-work-card--detail"><a class="ds-work-card--author js-wsj-grid-card-author ds2-5-body-md ds2-5-body-link" data-author-id="58696437" href="https://independent.academia.edu/httpwwwnonmetmatethzchpeopleprofsgauckler"><img alt="Profile image of Ludwig J Gauckler" class="ds-work-card--author-avatar" src="https://0.academia-photos.com/58696437/15673844/16233886/s65_ludwig.gauckler.jpg" />Ludwig J Gauckler</a></div><div class="ds-work-card--detail"><p class="ds-work-card--detail ds2-5-body-sm">2007, Langmuir</p><div class="ds-work-card--work-metadata"><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">visibility</span><p class="ds2-5-body-sm" id="work-metadata-view-count">…</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">description</span><p class="ds2-5-body-sm">8 pages</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">link</span><p class="ds2-5-body-sm">1 file</p></div></div><script>(async () => { const workId = 31473797; const worksViewsPath = "/v0/works/views?subdomain_param=api&work_ids%5B%5D=31473797"; const getWorkViews = async (workId) => { const response = await fetch(worksViewsPath); if (!response.ok) { throw new Error('Failed to load work views'); } const data = await response.json(); return data.views[workId]; }; // Get the view count for the work - we send this immediately rather than waiting for // the DOM to load, so it can be available as soon as possible (but without holding up // the backend or other resource requests, because it's a bit expensive and not critical). const viewCount = await getWorkViews(workId); const updateViewCount = (viewCount) => { try { const viewCountNumber = parseInt(viewCount, 10); if (viewCountNumber === 0) { // Remove the whole views element if there are zero views. document.getElementById('work-metadata-view-count')?.parentNode?.remove(); return; } const commaizedViewCount = viewCountNumber.toLocaleString(); const viewCountBody = document.getElementById('work-metadata-view-count'); if (!viewCountBody) { throw new Error('Failed to find work views element'); } viewCountBody.textContent = `${commaizedViewCount} views`; } catch (error) { // Remove the whole views element if there was some issue parsing. document.getElementById('work-metadata-view-count')?.parentNode?.remove(); throw new Error(`Failed to parse view count: ${viewCount}`, error); } }; // If the DOM is still loading, wait for it to be ready before updating the view count. if (document.readyState === "loading") { document.addEventListener('DOMContentLoaded', () => { updateViewCount(viewCount); }); // Otherwise, just update it immediately. } else { updateViewCount(viewCount); } })();</script></div><p class="ds-work-card--work-abstract ds-work-card--detail ds2-5-body-md">Inorganic colloidal particles which are in situ hydrophobized upon adsorption of short-chain amphiphilic molecules can be used as foam stabilizers. In this study, we tailor the microstructure of particle-stabilized wet foams, namely, the foam air content, average bubble size, and bubble size distribution, by changing the composition of the initial colloidal suspension. Wet foams featuring average bubble sizes between 10 and 200 µm and air contents between 45% and 90% were obtained by adjusting the amphiphile and particle concentration, pH, ionic strength, and particle size in the initial suspension. The influence of these parameters on the bubble size was satisfactorily described in terms of a balance between the shear stress applied during mixing and the counteracting Laplace pressure of the air bubbles. This model, originally developed for oil droplets in emulsions, can therefore be used to deliberately tailor the microstructure of particle-stabilized wet foams.</p><div class="ds-work-card--button-container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--work-card","attachmentId":51827668,"attachmentType":"pdf","workUrl":"https://www.academia.edu/31473797/Tailoring_the_Microstructure_of_Particle_Stabilized_Wet_Foams"}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--work-card","attachmentId":51827668,"attachmentType":"pdf","workUrl":"https://www.academia.edu/31473797/Tailoring_the_Microstructure_of_Particle_Stabilized_Wet_Foams"}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div><div class="ds-signup-banner-trigger-container"><div class="ds-signup-banner-trigger ds-signup-banner-trigger-control"></div></div><div class="ds-signup-banner ds-signup-banner-control"><div id="ds-signup-banner-close-button"><button class="ds2-5-button ds2-5-button--secondary ds2-5-button--inverse"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">close</span></button></div><div class="ds-signup-banner-ctas"><img src="//a.academia-assets.com/images/academia-logo-capital-white.svg" /><h4 class="ds2-5-heading-serif-sm">Sign up for access to the world's latest research</h4><button class="ds2-5-button ds2-5-button--inverse ds2-5-button--full-width js-swp-download-button" data-signup-modal="{"location":"signup-banner"}">Sign up for free<span class="material-symbols-outlined" style="font-size: 20px" translate="no">arrow_forward</span></button></div><div class="ds-signup-banner-divider"></div><div class="ds-signup-banner-reasons"><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Get notified about relevant papers</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Save papers to use in your research</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Join the discussion with peers</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Track your impact</span></div></div></div><script>(() => { // Set up signup banner show/hide behavior: // 1. 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However, the thermodynamic instability of wet foams leads to undesired bubble coarsening over time. Foam stability can be drastically improved by using particles instead of surfactants as foam stabilizers, since particles tend to adsorb irreversibly at the air-water interface. Recently, we presented a novel method for the preparation of high-volume particle-stabilized foams which show neither bubble growth nor drainage over more than 4 days. The method is based on the in-situ hydrophobization of initially hydrophilic particles to enable their adsorption on the surface of air bubbles. In-situ hydrophobization is accomplished through the adsorption of short-chain amphiphiles on the particle surface. In this work, we illustrate how this novel method can be applied to particles with various surface chemistries. For that purpose, the functional group of the amphiphilic molecule was tailored according to the surface chemistry of the particles to be used as foam stabilizers. Short-chain carboxylic acids, alkyl gallates, and alkylamines were shown to be appropriate amphiphiles to in-situ hydrophobize the surface of different inorganic particles. Ultrastable wet foams of various chemical compositions were prepared using these amphiphiles. The simplicity and versatility of this approach is expected to aid the formulation of stable wet foams for a variety of applications in materials manufacturing, food, cosmetics, and oil recovery, among others.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Stabilization of Foams with Inorganic Colloidal Particles","attachmentId":51827592,"attachmentType":"pdf","work_url":"https://www.academia.edu/31473803/Stabilization_of_Foams_with_Inorganic_Colloidal_Particles","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/31473803/Stabilization_of_Foams_with_Inorganic_Colloidal_Particles"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="1" data-entity-id="87368418" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/87368418/Bulk_and_bubble_scale_experimental_studies_of_influence_of_nanoparticles_on_foam_stability">Bulk and bubble-scale experimental studies of influence of nanoparticles on foam stability</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="114246703" href="https://futminna.academia.edu/NurudeenYekeen">Nurudeen Yekeen</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Chinese Journal of Chemical Engineering, 2017</p><p class="ds-related-work--abstract ds2-5-body-sm">Influence of silicon oxide (SiO 2) and aluminum oxide (Al 2 O 3) nanoparticles on stability of nanoparticles and sodium dodecyl sulfate (SDS) mixed solutions foams were studied at bulk and bubble-scale. Foam apparent viscosity was also determined in Hele-Shaw cell In order to investigate the foam performance at static and dynamic conditions. Results show that the maximum adsorption of surfactant on the nanoparticles occurs at 3 wt% surfactant concentration. Foam stability increases while the foamability decreases with the increasing nanoparticles concentration. However, optimum nanoparticles concentration corresponding to maximum foam stability was obtained at 1.0 wt % nanoparticles concentration for the hydrophilic SiO 2 /SDS and Al 2 O 3 /SDS foams. Foam performance was enhanced with increasing nanoparticles hydrophobicity. Air-foams were generally more stable than CO 2 foams. Foam apparent viscosity increased in presence of nanoparticles from 20.34cp to 84.84cp while the film thickness increased from 27.5 µm to 136 µm. This study suggests that the static and dynamic stability of conventional foams could be improved with addition of appropriate concentration of nanoparticles into the surfactant solution. The nanoparticles improve foam stability by their adsorption and aggregation at the foam lamellae to increase film thickness and dilational viscoelasticity. This prevents liquid drainage and film thinning and improves foam stability both at the bulk and bubble scale.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Bulk and bubble-scale experimental studies of influence of nanoparticles on foam stability","attachmentId":91596244,"attachmentType":"pdf","work_url":"https://www.academia.edu/87368418/Bulk_and_bubble_scale_experimental_studies_of_influence_of_nanoparticles_on_foam_stability","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/87368418/Bulk_and_bubble_scale_experimental_studies_of_influence_of_nanoparticles_on_foam_stability"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="2" data-entity-id="21469691" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/21469691/Super_stable_foams_stabilized_by_colloidal_ethyl_cellulose_particles">Super stable foams stabilized by colloidal ethyl cellulose particles</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="42548796" href="https://independent.academia.edu/EddiePelan">Eddie Pelan</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Soft Matter, 2012</p><p class="ds-related-work--abstract ds2-5-body-sm">Here we report the preparation of super stable liquid foams with various bubble sizes stabilized by colloidal ethyl cellulose (EC) particles. What is novel and different in this particle stabilized foam is that both the initial material (EC) and processes used are in principle food grade, thus it may offer scope in food applications. The particles were prepared using a conventional anti-solvent precipitation method, involving the dissolution of EC polymer into acetone, followed by fast mixing with water (anti-solvent), leading to the precipitation of EC particles, then followed by the rotary evaporation of acetone. The interfacial tension of the resulting dispersion is 36 mN m À1 , indicating that particles co-exist with surface active and water soluble components, which is most likely a low molecular weight EC fraction. The average particle diameter is 0.13 mm and their zeta potential is À50mV at pH ¼ 6, increasing to À5mV at pH ¼ 3. This negative surface potential is attributed to adsorption of hydroxyl ions, known to occur on many hydrophobic surfaces, including oil-water, air-water and hydrophobic particle-water. As a result, there is strong electrostatic repulsion between EC particles at neutral and low ionic strength, which stabilizes EC dispersion and also significantly increases the adsorption barrier of EC particle at the airwater interface. Due to their similar origin, both inter-particle repulsion and adsorption barrier can be controlled by pH and/or ionic strength, which leads to dispersion destabilization and at the same time good foamability and extreme foam stability at acidic conditions (pH < 4) and/or moderate or high ionic strengths (I > 20 mM). Foam coarsening shows an initial stage with coarsening time of approximately 1 week, followed by a plateau, where the coarsening has been arrested for a period of months. By using cryo scanning electron microscopy, we reveal that these EC foams are Pickering stabilized, where EC particles are closely packed at the air-water interface forming a single or multi-layers. We also show that super stable EC foams can be prepared using various aeration techniques, allowing us to vary the bubble diameter from a few microns to hundreds of microns.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Super stable foams stabilized by colloidal ethyl cellulose particles","attachmentId":41895809,"attachmentType":"pdf","work_url":"https://www.academia.edu/21469691/Super_stable_foams_stabilized_by_colloidal_ethyl_cellulose_particles","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/21469691/Super_stable_foams_stabilized_by_colloidal_ethyl_cellulose_particles"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="3" data-entity-id="106065929" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/106065929/Aqueous_foams_stabilized_solely_by_particles">Aqueous foams stabilized solely by particles</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="217048967" href="https://independent.academia.edu/EmmanuelleRio">Emmanuelle Rio</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Soft Matter, 2011</p><p class="ds-related-work--abstract ds2-5-body-sm">Foams are dispersions of bubbles in liquids, often water. They are frequently stabilized by surfactant or polymer, but like Pickering emulsions, they can be also stabilized solely by particles. If the particles have a moderate hydrophobicity, the foams can be extremely stable (lifetimes of the order of years). Due to technical preparation difficulties, very few studies can be found in the literature to date. We will discuss the origin of these difficulties. We will also describe experiments using partially hydrophobic fumed silica particles, in which the foam properties were correlated with the properties of spread and adsorbed layers of these particles at the air-water interface. These combined experiments allowed us to define the conditions necessary to stop bubble disproportionation.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Aqueous foams stabilized solely by particles","attachmentId":105562735,"attachmentType":"pdf","work_url":"https://www.academia.edu/106065929/Aqueous_foams_stabilized_solely_by_particles","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/106065929/Aqueous_foams_stabilized_solely_by_particles"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="4" data-entity-id="31473662" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/31473662/Materials_from_foams_and_emulsions_stabilized_by_colloidal_particles">Materials from foams and emulsions stabilized by colloidal particles</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="58696437" href="https://independent.academia.edu/httpwwwnonmetmatethzchpeopleprofsgauckler">Ludwig J Gauckler</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Journal of Materials Chemistry, 2007</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Materials from foams and emulsions stabilized by colloidal particles","attachmentId":51827491,"attachmentType":"pdf","work_url":"https://www.academia.edu/31473662/Materials_from_foams_and_emulsions_stabilized_by_colloidal_particles","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/31473662/Materials_from_foams_and_emulsions_stabilized_by_colloidal_particles"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="5" data-entity-id="96913370" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/96913370/Stabilization_of_liquid_foams_through_the_synergistic_action_of_particles_and_an_immiscible_liquid">Stabilization of liquid foams through the synergistic action of particles and an immiscible liquid</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="214928890" href="https://independent.academia.edu/BehrensSven">Sven Behrens</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Angewandte Chemie (International ed. in English), 2014</p><p class="ds-related-work--abstract ds2-5-body-sm">Liquid foams are familiar from beer, frothed milk, or bubble baths; foams in general also play important roles in oil recovery, lightweight packaging, and insulation. Here a new class of foams is reported, obtained by frothing a suspension of colloidal particles in the presence of a small amount of an immiscible secondary liquid. A unique aspect of these foams, termed capillary foams, is the particle-mediated spreading of the minority liquid around the gas bubbles. The resulting mixed particle/liquid coating can stabilize bubbles against coalescence even when the particles alone cannot. The coated bubbles are further immobilized by entrapment in a network of excess particles connected by bridges of the minority liquid. Capillary foams were prepared with a diverse set of particle/liquid combinations to demonstrate the generality of the phenomenon. The observed foam stability correlates with the particle affinity for the liquid interface formed by spreading the minority liquid at the ...</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Stabilization of liquid foams through the synergistic action of particles and an immiscible liquid","attachmentId":98679189,"attachmentType":"pdf","work_url":"https://www.academia.edu/96913370/Stabilization_of_liquid_foams_through_the_synergistic_action_of_particles_and_an_immiscible_liquid","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/96913370/Stabilization_of_liquid_foams_through_the_synergistic_action_of_particles_and_an_immiscible_liquid"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="6" data-entity-id="94498134" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/94498134/Non_aqueous_foams_Current_understanding_on_the_formation_and_stability_mechanisms">Non-aqueous foams: Current understanding on the formation and stability mechanisms</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="39209858" href="https://independent.academia.edu/ArnaudSaintjalmes">Arnaud Saint-jalmes</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Advances in Colloid and Interface Science, 2017</p><p class="ds-related-work--abstract ds2-5-body-sm"> Review of non-aqueous foams obtained by using solid or crystalline particles  Foaming properties are mainly driven by the interactions between the foam stabilizer and the non-aqueous liquid phase.  Correlation between the wettability of the particles, the surface tension of the nonaqueous liquid phase and the surface chemistry of particles.  Link between foaming properties of crystalline particles and their solubility limits  Crystalline particles melting process leads to responsive non-aqueous foams</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Non-aqueous foams: Current understanding on the formation and stability mechanisms","attachmentId":96937405,"attachmentType":"pdf","work_url":"https://www.academia.edu/94498134/Non_aqueous_foams_Current_understanding_on_the_formation_and_stability_mechanisms","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/94498134/Non_aqueous_foams_Current_understanding_on_the_formation_and_stability_mechanisms"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="7" data-entity-id="94498166" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/94498166/Microfluidics_investigation_of_the_effect_of_bulk_nanobubbles_on_surfactant_stabilised_foams">Microfluidics investigation of the effect of bulk nanobubbles on surfactant-stabilised foams</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="39209858" href="https://independent.academia.edu/ArnaudSaintjalmes">Arnaud Saint-jalmes</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Colloids and Surfaces A: Physicochemical and Engineering Aspects</p><p class="ds-related-work--abstract ds2-5-body-sm">In aqueous foams, the bubble size usually spans from tens of microns to centimetres. It is however possible to create much smaller and stable bubbles in solutions: the recently discovered nanobubbles have diameters well smaller than a micron. Many issues are still pending on nanobubbles, especially regarding their stability. Here, we address if and how the addition of nanobubbles may change the interfacial and foaming properties of surfactant solutions. Experiment Using a first microfluidic device, nanobubbles are added to surfactant solutions (SDS and Triton X-100 at different concentrations). A second microfluidic device then generates foams from these solutions. In parallel, we also report systematic results on the interfacial and bulk properties of such solutions. Key findings Finally, we show that nanobubbles have some effects on almost all the measured quantities; however, the most striking one is to enhance the foaming of the solutions having an initial poor foamability. These measurements provide us with a wide set of new results allowing us to draw a first multi-scale picture of how far nanobubbles could potentially act as foam boosters and stabilizers or could be implemented in colloidal formulation. Yet, more investigations are required to unravel the mechanisms leading to our results.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Microfluidics investigation of the effect of bulk nanobubbles on surfactant-stabilised foams","attachmentId":96937387,"attachmentType":"pdf","work_url":"https://www.academia.edu/94498166/Microfluidics_investigation_of_the_effect_of_bulk_nanobubbles_on_surfactant_stabilised_foams","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/94498166/Microfluidics_investigation_of_the_effect_of_bulk_nanobubbles_on_surfactant_stabilised_foams"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="8" data-entity-id="92972379" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/92972379/The_effect_of_nanoparticle_aggregation_on_surfactant_foam_stability">The effect of nanoparticle aggregation on surfactant foam stability</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="39490635" href="https://independent.academia.edu/DSchechter">David Schechter</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Journal of Colloid and Interface Science, 2017</p><p class="ds-related-work--abstract ds2-5-body-sm">The combination of nanoparticles (NPs) and surfactant may offer a novel technique of generating stronger foams for gas mobility control. This study evaluates the potential of silica NPs to enhance the foam stability of three nonionic surfactants. Results showed that the concentration of surfactant and NPs is a crucial parameter for foam stability and that there is certain concentrations for strong foam generation. A balance in concentration between the nonionic surfactants and the NPs can enhance the foam stability as a result of forming flocs in solutions. At fixed surfactant concentration, the addition of NPs at low to intermediate concentrations can produce a more stable foam compared to the surfactant. The production of small population of flocs as a result of mixing the surfactant and NPs can enhance the foam stability by providing a barrier between the gas bubbles and delaying the coalescence of bubbles. Moreover, these flocs can increase the solution viscosity and, therefore, slow the drainage rate of thin aqueous film (lamellae). The measurements of foam half-life, bubble size, and mobility tests confirmed this conclusion. However, the addition of more solid particles or surfactant might have a negative impact on foam stability and reduce the maximum capillary pressure of coalescence as a result of forming extensive aggregates.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"The effect of nanoparticle aggregation on surfactant foam stability","attachmentId":95839530,"attachmentType":"pdf","work_url":"https://www.academia.edu/92972379/The_effect_of_nanoparticle_aggregation_on_surfactant_foam_stability","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/92972379/The_effect_of_nanoparticle_aggregation_on_surfactant_foam_stability"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="9" data-entity-id="101604293" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/101604293/Foams_and_emulsions_stabilized_by_Nanoparticles_of_varying_hydrophobicity_and_shape">Foams and emulsions stabilized by Nanoparticles of varying hydrophobicity and shape</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="269244454" href="https://independent.academia.edu/AlessioCaciagli">Alessio Caciagli</a></div><p class="ds-related-work--metadata ds2-5-body-xs">2016</p><p class="ds-related-work--abstract ds2-5-body-sm">"Particles adsorbed at a fluid-fluid interface induce deformations in the shape of the interface. These socalled capillary deformations generate strong and long-range interactions between the particles, driving them to assemble into 2D structures. Therefore they are of crucial relevance in the formation of 2D (or quasi-2D) new materials. Through a recently introduced numerical method [1], we numerically calculate the equilibrium shape of the fluid-fluid interface for a given position and orientation of the adsorbed particles, and from this we obtain the capillary potential between the particles. In this talk we will present results for the capillary interactions and self-assembly of particles with various shapes and contact angles adsorbed at flat or possibly curved fluid-fluid interfaces. In particular, we will present results for adsorbed cubes, showing that, when they have a contact angle close to , they generate a hexapole deformation field in the interface height profile, which drives them to assemble into hexagonal and honeycomb structures [2], as observed experimentally [3]."</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Foams and emulsions stabilized by Nanoparticles of varying hydrophobicity and shape","attachmentId":102099757,"attachmentType":"pdf","work_url":"https://www.academia.edu/101604293/Foams_and_emulsions_stabilized_by_Nanoparticles_of_varying_hydrophobicity_and_shape","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/101604293/Foams_and_emulsions_stabilized_by_Nanoparticles_of_varying_hydrophobicity_and_shape"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div></div></div><div class="ds-sticky-ctas--wrapper js-loswp-sticky-ctas hidden"><div class="ds-sticky-ctas--grid-container"><div class="ds-sticky-ctas--container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--sticky-ctas","attachmentId":51827668,"attachmentType":"pdf","workUrl":null}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--sticky-ctas","attachmentId":51827668,"attachmentType":"pdf","workUrl":null}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div></div></div><div class="ds-below-fold--grid-container"><div class="ds-work--container js-loswp-embedded-document"><div class="attachment_preview" data-attachment="Attachment_51827668" style="display: none"><div class="js-scribd-document-container"><div class="scribd--document-loading js-scribd-document-loader" style="display: block;"><img alt="Loading..." src="//a.academia-assets.com/images/loaders/paper-load.gif" /><p>Loading Preview</p></div></div><div style="text-align: center;"><div class="scribd--no-preview-alert js-preview-unavailable"><p>Sorry, preview is currently unavailable. You can download the paper by clicking the button above.</p></div></div></div></div><div class="ds-sidebar--container js-work-sidebar"><div class="ds-related-content--container"><h2 class="ds-related-content--heading">Related papers</h2><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="0" data-entity-id="106065928" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/106065928/Foams_stabilised_by_mixtures_of_nanoparticles_and_oppositely_charged_surfactants_relationship_between_bubble_shrinkage_and_foam_coarsening">Foams stabilised by mixtures of nanoparticles and oppositely charged surfactants: relationship between bubble shrinkage and foam coarsening</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="217048967" href="https://independent.academia.edu/EmmanuelleRio">Emmanuelle Rio</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Soft Matter, 2014</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Foams stabilised by mixtures of nanoparticles and oppositely charged surfactants: relationship between bubble shrinkage and foam coarsening","attachmentId":105732896,"attachmentType":"pdf","work_url":"https://www.academia.edu/106065928/Foams_stabilised_by_mixtures_of_nanoparticles_and_oppositely_charged_surfactants_relationship_between_bubble_shrinkage_and_foam_coarsening","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-related-work-grid-card-view-pdf" href="https://www.academia.edu/106065928/Foams_stabilised_by_mixtures_of_nanoparticles_and_oppositely_charged_surfactants_relationship_between_bubble_shrinkage_and_foam_coarsening"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="1" data-entity-id="18416009" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/18416009/Liquid_and_particles_retention_in_foamed_suspensions">Liquid and particles retention in foamed suspensions</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="38424513" href="https://cea.academia.edu/SylvainFaure">Sylvain Faure</a><span>, </span><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="50235312" href="https://independent.academia.edu/OlivierPitois">Olivier Pitois</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Chemical Engineering Science, 2010</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Liquid and particles retention in foamed suspensions","attachmentId":40052095,"attachmentType":"pdf","work_url":"https://www.academia.edu/18416009/Liquid_and_particles_retention_in_foamed_suspensions","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-related-work-grid-card-view-pdf" href="https://www.academia.edu/18416009/Liquid_and_particles_retention_in_foamed_suspensions"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="2" data-entity-id="31473579" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/31473579/Ultrastable_Particle_Stabilized_Foams">Ultrastable Particle-Stabilized Foams</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="58696437" href="https://independent.academia.edu/httpwwwnonmetmatethzchpeopleprofsgauckler">Ludwig J Gauckler</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Angewandte Chemie International Edition, 2006</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Ultrastable Particle-Stabilized Foams","attachmentId":51827443,"attachmentType":"pdf","work_url":"https://www.academia.edu/31473579/Ultrastable_Particle_Stabilized_Foams","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-related-work-grid-card-view-pdf" href="https://www.academia.edu/31473579/Ultrastable_Particle_Stabilized_Foams"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="3" data-entity-id="45651061" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/45651061/Combined_effects_of_nanoparticles_and_surfactants_upon_foam_stability">Combined effects of nanoparticles and surfactants upon foam stability</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="2674713" href="https://imperial.academia.edu/MohammadJavadShojaei">Mohammad Javad Shojaei</a><span>, </span><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="32605256" href="https://independent.academia.edu/YvesM%C3%A9heust">Yves Méheust</a></div><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Combined effects of nanoparticles and surfactants upon 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